6BA-JK 2017 Edition. 6-Band Yagi (40M/20M/17M/15M/12M/10M) Optional 6M Add-on Kit Available

Transcription

1 6BA-JK 2017 Edition 6-Band Yagi (40M/20M/17M/15M/12M/10M) Optional 6M Add-on Kit Available 72 Grays Bridge Road, Brookfield, CT (TEL) (FAX) Last Updated:

2 JK Antennas Limited Warranty and Liability JK Antennas ( Manufacturer ) warrants to the original purchaser that this product will be free from defects in material, and workmanship for a period of one (1) year from the date of purchase. The determination of whether any part or parts will be covered by this limited warranty and whether any part or parts will be repaired, replaced or refunded will be solely determined by JK Antennas. Such determination will be made following evaluation of claim of alleged defect and subject to evaluation of possible misuse, abuse, unauthorized modifications, extreme weather conditions or improper installation. This warranty does not cover delivery, transportation, installation or any other costs that may be incurred from any defect. The purchaser, final customer, installer and user of these products individually and collectively acknowledge that these products can cause injury or death and individually and collectively accept full responsibility and liability for any and all personal and property damage (direct, indirect and punitive) caused during installation and subsequent use. Copyright Notice This publication is Copyright 2017 by JK Antennas. All rights reserved. No part of this publication or addendum or attachments may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior permission of JK Antennas. WARNINGS Installation of this antenna near power lines is dangerous. Contact with any high voltage power lines could result in electric shock or loss of life. Do not install this antenna where there is any possibility that the antenna or any part of the supporting structure could come in contact with power lines. Also ensure that no persons or pets can come in any contact with the antenna after it is installed. Dangerous voltages can exist on the antenna when it is in operation and no part of the system is insulated to prevent shock. Consult with FCC OET Bulletin 65 to properly evaluate whether the chosen installation site for this antenna will comply with the FCC guidelines for human exposure limits to radio frequency electromagnetic fields. This antenna structure is not designed to be used as a support structure. No persons or objects should be supported by or suspended from the antenna structure at any time. Because most antenna systems are installed at high heights, the installed location must take into account that falling debris may pose a hazard to humans, animals and property on the ground below. Be aware of and follow all local codes and ordinances when installing this antenna. 1

3 TOOLS REQUIRED This antenna uses all SAE standard tool sizes. Metric fasteners are not used on this antenna. Ensure hex keys used are SAE sizes to avoid stripping the socket cap screw heads. Size Description 5/16 Nut driver, socket or wrench (for #6-32 nylon lock nuts) 11/32 Nut driver, socket or wrench (for #8-32 nylon lock nuts) 3/8 Nut driver, socket or wrench (for #10-24 nylon lock nuts) 7/16 Nut driver, socket or wrench (for 1/4-20 nylon lock nuts) 9/16 Nut driver, socket or wrench (for 5/16-18 nylon lock nuts) 7/64 Allen wrench / Hex Key (for 6-32 socket head screws) 9/64 Allen wrench / Hex Key (for 8-32 socket head screws) 5/32 Allen wrench / Hex Key (for socket head screws) 3/16 Allen wrench / Hex Key (for 1/4-20 socket head screws) 9/16" Socket and ratchet (preferred), or combination wrench, or adjustable wrench (for boom to mast u-bolts) 2

4 ASSEMBLY GUIDELINES 1. Open the boxes and lay out the elements, hardware kits and parts 2. Using the parts list at the end this document, check to make sure all tubing, hardware kits and parts are included (extra numbers of bolts, screws, nuts and washers are included) 3. The use of Penetrox or Noalox or any other Anti-seize/Anti-Oxidant compound is HIGHLY recommended during installation of this antenna. Use a drop or 2 of this anti-seize paste on all screws before fastening. This will prevent the stainless-steel hardware from accidently locking up. Also a drop or two of the antioxidant paste on the element transitions will prevent corrosion in the joints as well ensure long lasting electrical performance. The document has been separated into different assembly sections based on the packaged hardware kits. While it is recommended to assemble in the order presented, please adjust as needed based on your working conditions and assembly area. STEP 1: Boom The 6BA-JK comes with two (2) 8-ft boom end sections (holes on one end), & one (1) 6-ft boom center section which are connected to each other using an internal sleeve at the joint. The boom has a 2" outer diameter. Assembled Boom Joint Insert the internal sleeve into one of the boom sections, line up the holes and attach the sleeve using the supplied nuts and bolts in the Boom Hardware Kit. Do not over-tighten - once the bolt is seated firmly, make one more turn. Attach the other boom section the same way to complete boom assembly. STEP 2: Boom to Mast Plate and Clamps The 6BA-JK comes with a 6" x 8" Boom to Mast Plate. The Boom to Mast Plate Kit includes four (2) sets of clamps sized for the 6BA-JK boom, along with appropriate assembly hardware. The Mast to Mast Plate Kit include two (2) U-bolt clamps sized for a 2" OD mast, along with appropriate assembly hardware. 3

5 Boom to Mast Plate attached to Boom Aluminum Clamp with uneven halves (narrower half always mounted on plate side) IMPORTANT NOTE: All clamp sets have uneven halves (i.e. one half of the clamp set is narrower than the other); the narrower half is mounted on the plate side. Recommended assembly method: Mount a short (5 foot tall) temporary mast into the ground. Mount the Boom to Mast Plate onto the short mast with the U-bolts from the Mast to Plate Kit and continue with assembly of the antenna. Once finished, remove the U-bolts and re-attach the assembled antenna on your tower. Mast position for the 6BA-JK is 132 (11Ft) from the reflector-end of the Boom. Measure and mark the mast position on the boom, and mount the boom at the identified position on the plate using the Boom to Mast Plate Kit. Mount the boom so that the bolt head faces up (towards the sky) and the nut faces down (towards the ground). Picture of Mast Plate to Mast (Custom made Tight Fit Stainless-Steel Flat U-Bolts) BEFORE THE ELEMENT ASSEMBLY, PLEASE SLIDE THE TRUSS CLAMP ONTO THE BOOM (refer STEP 6 /PAGE 22) 4

6 Diagram 1 ** All measurements shown here are taken from the reflector-end of the boom to the center of the element. 5

7 STEP 3: Element Assembly If you are also installing the optional 6M ADD-ON KIT, please read the 6M ADD-ON Kit instructions on page 22 before assembling the 10M DRV and 10MD1 elements. The elements of the 6BA-JK are comprised of various telescoping sizes of aluminum tubing attached to each other using counterbored holes to create a mechanically and electrically superior joint. Elements are designed to be mounted on the underside of the boom, following the location and measurements of Diagram 1 on the previous page. First assemble the Driven Element Center Sections (STEP 3a). Then, gather the Driven Element and other element center sections, and follow the instructions in the Element to Element Plate (STEP 3b) and the Boom to Element Plate (STEP 3c) sections coming after. Once all the center sections are mounted on the boom at the identified locations, the rest of the element tapers will be assembled off the antenna (STEP 3d). STEP 3a: Driven Element Center Section Assembly The 6BA-JK has five Driven Elements - one for each band (20M, 17M, 15M, 12M, 10M). Each Driven Element center section is comprised of two (2) aluminum tubes, one (1) solid fiberglass rod, and the screws and nuts found in the appropriately marked Driven Element Hardware Kit. ALUMINUM TUBES (2) 20M DRV 17M DRV 15M DRV 12M DRV 10M DRV 36" LONG 1.25" OD 18" LONG 1" OD 9" LONG 1" OD 18" LONG.75" OD FIBERGLASS ROD 1" OD.875" OD.625" OD BUTTON HEAD SCREWS 2-1/4" LONG For each band's Driven Element center section, the appropriately sized fiberglass rod is used to join together the two corresponding aluminum tubes (see chart above). Slide one end of the fiberglass rod inside the end of one tube and align the holes. Place the screws through the hole and tighten with a Keps nut. Do the same on the other side so that the fiberglass rod has aluminum tubes attached on both sides. NOTE: The head of the button head screw is to be placed on the same side as the counterbored hole on the opposite end of the tube. The button head screws form the studs that the transmission lines attach to, and these need to be pointing down when assembled and all counterbored holes facing up. Completed Driven Element Assembly mounted on Element Plate 6

8 The aluminum tube/fiberglass rod assemblies of the driven element center sections can be mounted on the element plates and then onto the boom the same as the other element sections. STEP 3b: Element to Element-Plate Assembly (Driven & Reflector) The 20M, 17M, 15M, 12M and 10M Element center sections (Driven Element & Reflector) are all attached to an Element Plate using the Element to Element-Plate Kit. Element being mounted to Element Plate using Black Clamps and nylon nuts Take the center (largest) section of each element (see chart below), and attach to an element plate using two (2) Black Polyamide Clamps and the appropriate hardware from the corresponding Element to Element Plate Kit. Make sure to mount the tubing so that the larger holes used for element taper assembly face up (towards the sky) and NOT down (towards the ground). Before applying final torque to the black clamps, there are two alignments that have to be completed: 1) Center the mounting plate on the element center section. 2) There are holes drilled on each side of the element center sections. Place the larger counter-bored holes face up on the same side as the nuts are on the mounting plate. In other words, the plate will be horizontal when mounted (with the black clamps on the underneath), the nuts will be on the topside of the plate and the counterbored holes should be facing straight up. 20M 17M 15M 12M 10M CENTER SECTION OD & BLACK CLAMP ID 1.25" 1" 1".75".75" After you do the alignments, tighten the screws on the black clamps evenly, alternating between each bolt. Do not apply all the torque to one bolt at a time, as this raises the chances of galling occurring when the opposite bolt is tightened. The gap between the blocks should just close when the torque is correct, and there should be an even amount of thread sticking out above each nut. Do NOT continue to add additional torque after the gap closes. CAUTION: Continuous over-tightening can cause the screw-head to jam through the black clamps holes. 7

9 Make sure to center the tubing exactly at the mid-point of the plate. STEP 3c: Boom to Element Plate Assembly Once the center sections are mounted on the plates, they can be attached to the boom using one (1) clamp set and the appropriate hardware from the Boom to Element Plate Kit. Follow the element positioning indicated in the diagram above. Element Plate mounted to Boom using Saddle clamp NOTE: The placement of the Driven Elements will also be guided by the attachment of the Transmission Lines (see section on Transmission Line Assembly for more details). Therefore, do NOT do final tightening of the nuts on the Boom to Element Clamps holding the Driven Elements until the Transmission Line is in place. REMEMBER: All clamp sets have uneven halves (i.e. one half of the set is narrower than the other); the narrower half is mounted on the plate side. IMPORTANT: Since 6BA-JK uses only 1 clamp per element plate, and the clamp is mounted off-center, Be SURE TO orient the clamp side of the plate closest to the reflector of the antenna, i.e the side towards the 20M Reflector element. IMPORTANT: It is advisable to have a tape measure that can measure down to 1/16th of an inch. Placing the element plates on the boom accurately will ensure the most precise, accurate and effective antenna performance. 8

10 Before final torquing, re-check spacing and horizontal alignments of element center sections on the boom using the measurements illustrated on Diagram 1. STEP 3d: Element Taper Assembly Once the element plates/element center sections have been mounted to the boom at the appropriate locations, the remaining tubes can be sleeved in to complete the tapered element sections, based on the schedule in Diagram 2. 6BA-JK ELEMENT TAPER SCHEDULE (20M 6M) Diagram 2 9

11 Note the joint in the picture below illustrating the counterbored (larger) hole in the outer tube to tightly nest the screw head. Each tube has one larger, counterbored hole drilled on one end, on one side. The side of the tube with the counterbored hole is ALWAYS the outer tube of a joint, with the smaller outer-diameter tube sleeved inside. The element sections are joined together with a single socket head cap screw. In all cases where element sections are telescoped together, the head of the socket head screw will be inserted into the larger diameter counterbored hole through the outer tubing and exit out the other side of the larger diameter tubing. IMPORTANT: Always be aware of the orientation of the larger countersunk hole, and keep them all on the same side as you insert the next tubing section. This way all the socket cap heads remain on the same side of the element tubing. 1.25" OD TUBE OD TUBE 1" OD TUBE.875" OD TUBE.75" OD TUBE.625" OD TUBE.5" OD TUBE.375" OD TUBE 20M CENTER X X X X X X X 17M CENTER X X X X X 15M CENTER X X X X X 12M CENTER X X X 10M CENTER X X X Following the taper schedules above, assemble the element tubes in descending order on both sides of the element center sections. Align the holes and attach them to each other firmly using the appropriate screws and nuts in the Element Hardware Kits. Do not forget to use the anti-seize paste. NOTE: Nylon nuts used on element sections should not be torqued so much that they crush the tubing. The nut only needs to seat firmly, as the nylon lock will keep it from loosening. Screw fits into recessed hole - face up Nylon Nut placed on opposite end - face down 10

12 Band Transition Screw Size Nut 20M 1.25" 1.125" 1-1/2" (SH1024-1) NN M /2 (SH1024-1) NN M/17M/15M 1" -.875" 1-1/4" (SH832-2) NN832 20M/17M/15M.875" -.75" 1-1/4" (SH832-2) NN832 20M/17M/15M/12M/10M.75" -.625" 1" (SH832-1) NN832 20M/17M/15M/12M/10M /4" (SH632) NN632 20M/17M/15M/12M/10M/6M.5" -.375" 3/4" (SH632) NN632 ALL Driven Element Tips & 10M D1.5 Slit Hose Clamps - NOTE: The screw heads should all be on the top side of the element (facing the sky) and the nuts on the bottom side of the element (facing the ground). Exposed Tip lengths of the elements (.375" OD tubes) are as follows: 20M 20M 17M 17M 15M 15M 12M 12M 10M 10M REF DRV REF DRV REF DRV REF DRV DRV D1 42" 28.5" 45" 38" 24-1/2" 24" 34-3/4" 34" 21" 13" Once all element tapers are installed, it is time to do final horizontal alignment of all the elements on the boom. Sight down the boom and align any elements that need it. Complete final torquing of nuts on all boom to element clamps. STEP 4: 40M Elements Installation The 40M elements are comprised of various telescoping sizes of aluminum tubing and are designed to be mounted on the underside of the boom, following the location and measurements below: The Reflector element channel will start at the edge on the Rear of the Boom. This will put the 40M Reflector element at 2 from the Rear of the boom. Please note the 40M Element Channel is 4 wide and the tubing is centered on the element Plate. First assemble the Driven Element Center Section (STEP 5a). Then, gather the Driven Element and other element center sections, and follow the instructions in the Element to Element Channel (STEP 5b) and the Boom to Element Channel (STEP 5c) sections coming after. Once all the center sections are mounted on the boom at the identified locations, the rest of the element tapers will be assembled off the antenna (STEP 5e). STEP 4a: 40M Driven Element Center Section Assembly The Driven Element center section is comprised of two (2) 36" long aluminum tubes with an outer diameter of 1.75 OD, one (1) solid fiberglass rod (1.5 OD), and the hardware found in the Driven Element Hardware Kit. 11

13 1) Slide one end of the fiberglass rod inside the end of one aluminum tube and align the holes. 2) Place the shorter screw on the hole away from the center and tighten using a nylon nut. 3) Place the longer button-head screw through the hole closer to the center with a serrated lock washer on each side and tighten with a nylon nut. 4) Do the same on the other side so that the fiberglass rod has aluminum tubes attached on both sides. Once assembled, the Driven Element center section can be mounted onto the element plates and then onto the boom the same as the other element sections in the next step. (The above picture shows the Balun L straps attached to the element center screws.) STEP 4b: 40M Element to Element Channel Assembly The 6BA 40M element center sections are attached to an Element Channel. Attach each 40M center section (all 1-3/4" outer diameter tubes) to a 40M element channel using two (2) Black Polyamide Clamps and the hardware from the Element to Element Channel Kit. Before applying final torque to the black clamps, there are several alignments that must be completed: 1) Center the mounting plate exactly at the middle of the center section tube. 2) Align the tubes so that when screws are used to attach the next taper, the screw heads will face up (towards the sky). 2) When mounting the Driven Element center, make sure that the exposed screws face away from the Element Plate (down, towards the ground) After the above alignments are completed, tighten the screws on the black clamps evenly, alternating between each bolt. Do not apply all the torque to one bolt at a time, as this raises the chances of galling occurring when the opposite bolt is tightened. The gap between the blocks should just close when the torque is correct, and there should be an even amount of thread sticking out above each nut. Do NOT continue to add additional torque after the gap closes. CAUTION: Continuous over-tightening can cause the screw-head to jam through the black clamps holes. 40M center sections mounted on element channels 12

14 STEP 4c: Boom to Element Plate/Channel Assembly Once the 40M center sections are mounted on the channels they are attached to the boom using two (2) clamp sets and the appropriate hardware from the Boom to Element Channel Kit (for 40M) Follow the element positioning indicated in the table in the beginning of Step 5. 40M) center section mounted to boom using saddle clamps REMEMBER: All clamp sets have uneven halves (i.e. one half of the set is narrower than the other); the narrower half is mounted on the plate side. IMPORTANT: It is advisable to have a tape measure that can measure down to 1/16th of an inch. Placing the element plates on the boom accurately will ensure the most precise, accurate and effective antenna performance. Before final torquing, re-check spacing and horizontal alignments of element center sections on the boom using the measurements in the table above. Minor adjustments (quarter inch to half inch) to element positions may be necessary in cases where the elements fall on the boom joints. STEP 4d: 40M Coil Assembly Each 40M coil assembly is comprised of two 1.25 OD aluminum tubes, one fiberglass rod, one coil, and the appropriate screws, nuts, serrated lock washers and silicone tape (Coil Hardware Kit). The fiberglass rod has 4 holes, which are ¼ holes. The outside holes from the center and are used for the mechanical mounting of the tubing to the fiberglass. The inside holes are used for mounting the coil using the Full Thread screws. NOTE: Always use an anti-oxidant (Penetrox) while tightening the screws and nuts. 1) Starting with either the CF or the CB tube, insert the fiberglass rod and line-up the holes. Attach the tubes to the rod through the outside holes using the provided ¼-20 screws and ¼-20 nylon nuts. 2) Repeat on the other side of the fiberglass rod with the remaining tube. Once completed, the section should look like the picture below, with the ¼ holes still open 13

15 14

16 ¼ holes (outside) to attach fiberglass rod to aluminum tubes Now, to attach the coils, follow these steps: 1/4" holes (inside) to mount the coil 3) Place a serrated/tooth washer (LW14ExT) onto a 1/4"-20 Full-thread screw, and insert into one of the 1/4 holes on the fiberglass rod/tube assembly. 4) Add another serrated/tooth washer onto the screw on the far side of the rod, and finish with a 1/4-20 nylon-nut. Tighten as far as you can, stopping just short enough to still allow the screw to rotate freely. 5) Attach a 1/4-20 plain hex nut and turn it until it reaches the nylon nut. 15

17 6) Follow these same steps with the remaining hole on the other side of the fiberglass rod, but this time insert the screw from the opposite side of the rod. 7) Wrap the provided silicone tape over the exposed section of the fiberglass rod (this tape has no adhesive, so it only bonds to itself stretch and wind the tape over the exposed section, using approximately 24 inches or less of tape on each rod). 8) Slide the coil onto the assembly; thread the Full-thread screw four to five times directly into the coil standoff. 9) GENTLY tighten the hex-nut over the standoff to act as a jam nut. 10) Do the same on the other side. 11) Tighten the nylon-nut firm and tight along the tube. 16

18 NOTE: It is very important to have a solid mechanical connection, with the nut and screw making a tight contact over the tubing. Visually inspect the coil assembly for any twists or non-symmetry while tightening these nuts. Adjust them carefully by pulling them back into place. Repeat this same process for all the coil assemblies. The total assembled length of the coil assembly is approximately 59-5/8. NOTE: While tightening, take care to NOT put too much pressure over the coil standoffs. We recommend that you hold the standoff with pliers or a wrench to prevent any excess pressure being put on the coil joint to the standoff while tightening the jam-nut. STEP 4e: Element Taper Assembly Once the 40M center section has been mounted, and the coil sections have been assembled, the remaining tubes can be sleeved in to complete the tapered element sections. 40M: The 40M element has eight (9) tapered aluminum sections on each side of the 1.75 center section, ranging from 1.5 (largest) to.375 (smallest). 1) Slide 6 inches of the 1.5 OD tube into the center section tube and align the holes. Attach using the appropriate hardware (40M Element Hardware Kit) as shown in the table below. (Use a drop of antiseize paste on all screws). Transition Screw Size Nylon Nut Size SH NN SH NN " - 1" SH NN1024 1" -.875" SH832-3 NN832 17

19 .875" -.75" SH832-3 NN832.75" -.625" SH832-1 NN " -.5 Slit" SH632 NN632.5" Slit -.375" HC-2 none 2) Slide the CF side of the 40M coil assembly (1.25 tube) into the 1.5 OD tube and attach. Important : The 1.0 OD tubing has 2 different hole diameters at each end. The larger hole side goes into the 1.25-CB tubing and the counterbore single hole side towards the OD tubing. 3) Continue to assemble and attach the progressively smaller tapers of aluminum tubing, using the appropriate hardware, as shown in the table above. Exposed Tip Length Length 40M Ref " 1".875".75".625".5" Slit.375" is the tip 33 CW 27 - SSB 40M Drv Slit.375 is the tip 18 - CW 13 - SSB The tips lengths have been optimized for (7.0MHz MHz) or- performance. CW The tips lengths have been optimized for (7.080MHz 7.260MHz) or- performance. SSB 4) The smallest taper on each element is inserted into the slit end of the previous size, and attached using a hose-clamp (and not the screws). The exposed tip length of the smallest taper on each element must follow the table above. SPECIAL NOTE: The tapers from 1.0 and below use single hole counterbore to tightly nest the screw head onto the tube inserted into it. Note the joint in the picture below illustrating the counterbored (larger) hole in the outer tube to tightly nest the screw head. Each tube has one larger, counterbored hole drilled on one end, on one side. The side of the tube with the counterbored hole is ALWAYS the outer tube of a joint, with the smaller outer-diameter tube sleeved inside. The element sections are joined together with a single socket head cap screw. In all cases where element sections are telescoped together, the head of the socket head screw will be inserted into the larger diameter counterbored hole through the outer tubing and exit out the other side of the larger diameter tubing. 18

20 IMPORTANT: Always be aware of the orientation of the larger countersunk hole, and keep them all on the same side as you insert the next tubing section. This way all the socket cap heads remain on the same side of the element tubing. NOTE: Always use an anti-oxidant (Penetrox) while tightening the screws and nuts. We recommend assembled elements to have the screw head on the top side of the element (facing the sky) and the nut on the bottom side of the element (facing the ground). top side of the element (facing the sky) and the nut on the bottom side of the element (facing the ground). STEP 5: Transmission Lines & Balun Assembly The 6BA-JK is delivered with pair of L shaped angle aluminum strip that s 78 inches long. Once mounted, the gap between the transmission lines will be approximately 3/8 (0.375 ). Aluminum spacers are placed between the transmission lines and all of the driven elements EXCEPT the 20M Driven Element to keep the transmission lines level. There are 3 different sizes of spacers, which are found along with their corresponding Nyloc nuts in the Transmission Line/Balun Kit: Aluminum Spacer #1 & #2 (1/2 & 5/8" long) each goes on the 10M and 12M Driven elements. Aluminum Spacer #2 (1/2" long) 2-each goes on the 15M and 17M Driven elements. Aluminum Spacer #5 (7/16 long) 1- each goes on the 20M Driven element. 19

21 The 6BA-JK is delivered without a balun. We recommend a 1:1 current balun since the antenna is designed to be fed with a 50 Ohm balanced source, bringing the antenna to true optimum performance. Mount your balun to the transmission line beneath the 20M Driven element, using the L shaped brackets and hardware provided in the Transmission Line/ Balun Kit. Use the aluminum spacers to bring the mounting position of the L to the balun, just to the point where the balun can be just below the transmission lines. If preferred, a simple length of tie-wrap could be used to secure the balun to the transmission line. Use the supplied Nylock Nut to tighten the L brackets below the transmission line and spacers. (Using a longer lead from the balun to the transmission line can alter the SWR characteristics on all bands. If using a different lead than the one provided please make sure that s it is not more than 2-3 inches long.) 40M SHUNT COIL Attach the shunt coil to the 40M Driven element as shown in the picture below and tighten using a Nyloc Nut. 20

22 Most Important!! Please make sure to route the coax away from the Transmission line. It s very important that the coax from/to the balun is not secured or attached or touches the Transmission line. You can loop it around sideways and then go over to the boom and attach there. 21

23 STEP 6: Truss Assembly 1) Mount the two (2) clamps in the Boom to Truss Cable Kit onto the boom at the following locations: At approximately 90 inches from the mast/center on the boom's Reflector side At approximately 90 inches from the mast/center on the boom's Director side 2) Attach the clamp from the Mast to Truss Cable Kit onto the mast, 36 inches or more above the boom, using the provided hardware. Use the plain Hex Nut with Lockwasher and then add the Flat Washer before inserting the Turnbuckles. 3) Mount the eye-side of each of the Jaw-Eye Turnbuckles (packaged with Truss Cables), one on either side of the Mast to Trust Clamp. Loosen the turnbuckles and apply Penetrox to the threads. Add another Flat Washer and then complete with the Nylock Nut to the Hex Screw on the Mast clamp. 4) Adjust the tensions of the turnbuckles as needed and level the boom after mounting the antenna on the mast. STEP 6: Antenna Final Check and Test prior to installation Dimensions: Although the element lengths are set from the factory, it is highly recommended that you take the time to document and check all the dimensions of your assembled antenna with factory dimensions. There is so much time involved in installing the smallest of antennas that is not worth skipping the dimension documentation. We recommend that make a note of all your element spacings and lengths down to a ¼. Diagram 1 on page 4 shows the element spacings and Diagram 2 on page 8 shows the element taper lengths. The tip lengths for all elements are on page 10. Hardware Installation: Verify that all the hardware has been tightened and there are no loose fasteners. SWR Test: You may connect a SWR analyzer with the antenna only a few feet off the ground to make sure you do not have a short or open circuit anywhere. You can do this by verifying that you do not have an extremely high SWR on every band. Do not be concerned unless the SWR is high on all bands. The antenna will not have the specified SWR curves unless it is installed at a height of at least 30 feet above ground. With the antenna at least 8 feet from the ground, you will start to see the SWR dip below 2:1 somewhere in or near 22

24 each of the five supported frequency ranges. As long as you start to see a dip somewhere around (above or below) each of the five bands, you may proceed with installation. In the case of 40M, the dip for the CW setting at 5Ft above the ground will be at around 6.85Mhz. For SSB setting the dip will at around Mhz at 5Ft off the ground. This is often the best height to test at ground level. Any measurements taken above this height such as 15Ft or 20Ft may not yield a proper 1:1 dip depending on your ground conditions. Installation: The antenna should be installed by a professional in a safe manner on a support structure that is rated to handle the weight and wind load of this antenna, in all expected weather conditions. The boom to mast plate is supplied with saddle clamps to mount to a 2 outer diameter mast (user supplied). The 6BA-JK antenna is designed to be fed with 50 Ohm coaxial cable such as RG-8 or RG-213. Pretest the entire run of coax cable with a 50 Ohm dummy load to ensure there are no problems with either the coax or the coax connectors. Most SWR issues are due to coax or connector issues and not related to the antenna itself. Even if the coax was previously being used for another antenna, repositioning of the cable can cause new connector faults to occur. You should also test the cable at the full power you intend to run, if possible. Surrounding metallic objects (other antennas, guy wires, etc.) can affect the performance of the antenna. If the antenna is not interacting with anything, you can expect the specified SWR curve, gain and front to rear performance. There are no user adjustments necessary for this antenna - any SWR issues indicate a coax and/or connector fault, or interaction of this antenna with another metallic object and those situations must be corrected. OPTIONAL 6M ADD-ON KIT The optional 6M ADD-ON KIT is comprised of two 6M element center section, tips and the appropriate assembly and mounting hardware. The 6M elements are NOT mounted on the boom - the 6M DRV element is mounted onto the Boom to Element Plate of the 10M DRV Element (on the forward side), and the 6M D1 element is mounted onto the Boom to Element Plate of the 10M D1 (rear side), using special Element Brackets. As such, the extra thickness of these Element Brackets requires slightly longer screws to be used when attaching the 10M DRV and 10MD1 elements to their respective Boom to Element Plates. NOTE: Disregard the screws that are packaged with the Boom to Elements Plates for the 10M DRV and 10M D1, and use the screws that come packaged with the 6M Element Brackets instead. Attach the center sections of the 10M DRV and 10M D1 elements to their Element Plates following the instructions in STEP 3b (Page 6). However, when positioning the black clamps on the underneath of the 23

25 plate, position the 6M Element Bracket on the top (sky) side of the plate - pointing towards the front of the boom - and attach using the hardware packaged with the brackets. Once the 10M DRV and 10M D1 elements are mounted onto the boom following the instructions in STEP 3c, the center sections of the 6M DRV (attached to the 10M DRV) and the 6M D1 (attached to 10M D1) can be mounted onto the other end of the Element Brackets using the black clamps are hardware provided in the Element to Element Bracket Kit, making sure that the sections are centered exactly, and that the larger, counter-bored holes face up (same as other elements). Attach the tips of the 6M DRV and 6M D1 elements, following the instructions in STEP 3d and the hardware in the 6M Element Hardware Kit. The exposed tip lengths are as follows: 6M 6M DRV D1 20-1/2" 21-1/2" 6BA-JK PARTS LIST BOOM TO MAST ASSEMBLY BMP7 for 2" mast 12" x 7" Mast Plate 1 Boom to Mast Plate BMC 2.0-3i-5/8 2" Boom to Plate clamp 4 HH /2" Hex Head Screw 5-16/ NN51618 Nylon Nut 5-16/ Mast to Mast Plate U-Bolt 2" Mast to Plate clamp 4 BOOM & TRUSS ASSEMBLIES AT2.0Boom 6ft-2S Boom Section 6ft 2.0" OD 1 AT2.0Boom 8ft-1S Boom End Section 8ft 2.0" OD 2 AT1.75Sleeve Boom Sleeve 2 Boom Hardware HH /4" Hex Head Screw 3/ NN3816 Nylon Nut 3/ Boom to Truss Cable BTC 2" Boom Clamp for Truss Cables 2 CB /2" Carriage Bolt 3/ NN3816 Nylon Nut 3/8 2 Truss Cables + Turnbuckles TC95 95" truss cable 2 TBJE800 Turnbuckle (800#) 2 Mast to Truss Cable U Bolt 2" Mast - Truss Clamp - U Bolt 1 NN3816 Nylon Nut 3/ FW38 FENDER WASHER FENDER Washer 3/8 4+2 LW38 LOCK WASHER 2+1 BOOM TO 20M ELEMENT ASSEMBLIES BEP-3 9" x 3" Element Plate for 20M 2 Element to Element Plate (two 20M Elements) BC /4" Black Polyamide clamps 4 SH /4" Socket Head Screw 1/ NN1420 Nylon Nut 1/ Boom to Element Plate (two 20M Elements) 24

26 BEC2.0-3i-5/8 2" Boom to Element Plate clamp 2 HH /2" Hex Head Screw 5/ NN51618 Nylon Nut 5/ BOOM TO 17M/15M/12M/10M ELEMENT ASSEMBLIES BEP-4 8-1/4" x 2-1/2" Element Plate for 17M/15M/12M/10M 8 Element to Element Plate (two 17M and two 15M Elements) BC1.0 1" Black Polyamide clamps 8 SH /4" Socket Head Screw 1/ NN1420 Nylon Nut 1/ Element to Element Plate (two 12M and two 10M Elements) BC.75 3/4" Black Polyamide clamps 8 SH /4" Socket Head Screw 1/ NN1420 Nylon Nut 1/ Boom to Element Plate (two 17M Elements, two 15M Elements, two 12M Elements, two 10M Elements) BEC2.0-3i 2" Boom to Element Plate clamp 8 HH /2" Hex Head Screw 1/ NN1420 Nylon Nut 1/ M ELEMENT ASSEMBLIES (2 Elements) AT M-REF REF Center 72" Alum Tube 1.25" OD 1 AT M-DRV DRV Center 36" Alum Tube 1.25" OD 2 AT1.125D Doubler for Drv Center Alum Tube Doubler 1.125"OD 2 AT " Alum Tube 1.125" OD 4 AT1.0-20M 18" Alum Tube 1.0" OD 4 AT M 24" Alum Tube.875" OD 4 AT.75-20M 24" Alum Tube.75" OD 4 AT M 36" Alum Tube.625" OD 4 AT.5S-20M 36" Alum Tube.5" OD SLIT 4 AT M-REF REF Tips Alum Tube.375" OD 2 AT M-DRV DRV Tips Alum Tube.375" OD 2 20M Element Hardware SH /2" Socket Head Screw NN1024 Nylon Nut SH /4" Socket Head Screw SH " Socket Head Screw NN832 Nylon Nut SH632 3/4" Socket Head Screw NN632 Nylon Nut HC-2 Hose Clamp 9/16" Band Width M Driven Element Hardware FG1.0DE 1" OD Fiberglass Rod for Driven Element 1 BH1024 3" Button Head Screw KN1024 Keps Nut M ELEMENT ASSEMBLIES (2 Elements) AT1.0-17M-REF REF Center 36" Alum Tube 1" OD 1 AT1.0-17M-DRV DRV Center 18" Alum Tube 1" OD 2 AT M 24" Alum Tube.875" OD 4 AT.75-17M 24" Alum Tube.75" OD 4 AT M 36" Alum Tube.625" OD 4 AT.5S-17M 36" Alum Tube.5" OD SLIT 4 AT M-REF REF Tips Alum Tube.375" OD 2 AT M-DRV DRV Tips Alum Tube.375" OD 2 17M Element Hardware SH /4" Socket Head Screw

27 SH " Socket Head Screw NN832 Nylon Nut SH632 3/4" Socket Head Screw NN632 Nylon Nut HC-2 Hose Clamp 9/16" Band Width M Driven Element Hardware FG.875DE.875" OD Fiberglass Rod for Driven Element 1 BH /2" Button Head Screw KN1024 Keps Nut M ELEMENT ASSEMBLIES (2 Elements) AT1.0-15M-REF REF Center 18" Alum Tube 1" OD 1 AT1.0-15M-DRV DRV Center 9" Alum Tube 1" OD 2 AT M 24" Alum Tube.875" OD 4 AT.75-15M 24" Alum Tube.75" OD 4 AT M 36" Alum Tube.625" OD 4 AT.5S-15M 36" Alum Tube.5" OD SLIT 4 AT M-REF REF Tips Alum Tube.375" OD 2 AT M-DRV DRV Tips Alum Tube.375" OD 2 15M Element Hardware SH /4" Socket Head Screw SH " Socket Head Screw NN832 Nylon Nut SH632 3/4" Socket Head Screw NN632 Nylon Nut HC-2 Hose Clamp 9/16" Band Width M Driven Element Hardware FG.875DE.875" OD Fiberglass Rod for Driven Element 1 BH /2" Button Head Screw KN1024 Keps Nut M ELEMENT ASSEMBLY (2 Elements) AT.75-12M-REF REF Center 36" Alum Tube.75" OD 1 AT.75-12M-DRV DRV Center 18" Alum Tube.75" OD 2 AT M 36" Alum Tube.625" OD 4 AT.5S-12M 36" Alum Tube.5" OD SLIT 4 AT M-REF REF Tips Alum Tube.375" OD 2 AT M-DRV DRV Tips Alum Tube.375" OD 2 12M Element Hardware SH " Socket Head Screw NN832 Nylon Nut SH632 3/4" Socket Head Screw NN632 Nylon Nut HC-2 Hose Clamp 9/16" Band Width M Driven Element Hardware FG.625DE.625" OD Fiberglass Rod for Driven Element 1 BH /2" Button Head Screw KN1024 Keps Nut M ELEMENT ASSEMBLIES (2 Elements) AT.75-10M-DRV DRV Center 18" Alum Tube.75" OD 2 AT.75-10M-D1 D1 Center 36" Alum Tube.75" OD 1 AT M 36" Alum Tube.625" OD 4 AT.5S-10M 36" Alum Tube.5" OD SLIT 4 AT M-DRV DRV Tips Alum Tube.375" OD 2 AT M-D1 D1 Tips Alum Tube.375" OD 2 26

28 10M Element Hardware SH " Socket Head Screw NN832 Nylon Nut SH632 3/4" Socket Head Screw NN632 Nylon Nut HC-2 Hose Clamp 9/16" Band Width M Driven Element Hardware FG.625DE.625" OD Fiberglass Rod for Driven Element 1 BH /2" Button Head Screw KN1024 Keps Nut TRANSMISSION LINES/BALUN ASSEMBLY - (Balun not included) TL78 Transmission Line Aluminum Angle Bar 2 AS-1 5/8" Aluminum Spacer 4+2 AS-2 1/2" Aluminum Spacer 12+2 AS-5 7/16" Aluminum Spacer 4+2 NN1024 Nylon Nut TL1.5 Aluminum "L" Bracket for Balun 2 40M ELEMENT ASSEMBLIES 40M Channel-2 40M Element Plate 2 Element to Element Channel BC /4" ID Black Polyamide clamps 8 SH " Socket Head Screw 1/ NN1420 Nylon Nut 1/ Boom to Element Channel BEC2.0-3i 2" Boom to Element Plate Clamp 4 HH /2" Hex Head Screw 1/ NN1420 Nylon Nut 1/ M ELEMENT ASSEMBLIES 6AT1.75 REF Center 6 ft Alum Tube 1.75" OD 1 3AT1.75 DRV Center 3 ft Alum Tube 1.75" OD DRV Center 2 3AT1.5 3 ft Alum Tube 1.5" OD 4 3AT 1.25 CF Coil Front (towards boom) 3 ft Alum Tube 1.25" Coil Front 4 3AT1.25 CB Coil Back (towards tip) 18" Alum Tube 1.25" Coil Back 4 3AT1.0 3 ft Alum Tube 1" OD 4 3AT " Alum Tube.875 OD 4 3AT.75 24" Alum Tube.75" OD 4 3AT ft Alum Tube.625" OD 4 3AT.5S 3 ft Alum Tube.5" OD (slit end) 4 3AT ft Alum Tube.375" OD 4 Coil Assembly 40M Coils 40M Coils 4 FG1.0 Coil Fiberglass rod 1" OD 4 SH Socket Head Screw 1/4-20 (1-3/4") 8+2 NN1420 Nylon Nut 1/ SH1420-3FT 3" FULL THREAD Socket Head Screw 1/4"-20 (3") FT 8+2 NN1420 Nylon Nut 1/4" HN1420 Hex Nut 1/4"

29 LW14ExT Lock Washer 1/4" External Tooth 16+2 Tape Tape 1 Element Assembly Hardware SH Socket Head Screw (1-1/2") 8+2 SH Socket Head Screw (2-1/4") 8+2 SH Socket Head Screw (2") 8+2 NN1024 Nylon Nut SH /4" Socket Head Screw SH " Socket Head Screw NN832 Nylon Nut SH632 3/4" Socket Head Screw NN632 Nylon Nut HC-2 Hose Clamp 9/16" Band Width M Driven Element Hardware FG1.5DE Fiberglass Rod for Driven Element 1 BH /4" Button Head Screw BH " Button Head Screw NN1024 Nylon Nut FW10 Flat Washer # KN1024 Keps Nuts SHCOIL Shunt Coil 1 28